Yummie Tummie "Pretty Powerful Lavine" Under Bust Slip Beguiling sheer scallop-edged mesh insets each side of a curve-sculpting slip cut from a luxurious knit fabric that slims and smoothes the tummy, hips, tush and thighs. The under-bust style can be worn with any bra and fits a variety of different sizes. By Yummie Tummie; imported. Lingerie.